Economizes



w. F. Ki'ESEL, JR- ECONOMIZER FOR LOCOMOTIVES.

APPLICATION FILED NQV.11. 1916.

Patented June 8, 1920.

3 SHEETS-SHEET I.

gwuew m w. F. KIESELIJR.

ECONOMIZER FOR LOCOMOTIVES.

APPLICATION FILED NOV. II, 1916.

m e m w W. F. KlESEL, JR. ECONOMIZER FOR LOCOMOTIVES.

APPLICATION FILED NOV-11, I916.

Patented June 8, 1920.

m M J/ n. m f Q n u w I n m n A 4 2E v|||| UNITED STATES PATENT OFFICE.

ECONOMIZER FOR LOCOMOTIVES.

Application filed November 11, 1916.

To all whom it may concern:

Be it known that I, WILLIAM F. Krnsnn, Jr., a citizen of the UnitedStates, and resident of Altoona, Blair county, State of Pennsylvania,have invented certain new and useful Improvements in Economizers forLocomotives, of which the following is a specification.

This invention relates to economizers or feed water heaters adapted tobe located in the stack of a locomotive.

The objects of the invention are to provide an eiiicient economizer orfeed water heater located in the stack of a locomotive boiler; toutilize the entire space 110w allotted to the stack; to make such aheater from tubes; to provide a special form of nozzle to deliver steamto the heater to produce a draft for the gases; to provide a nozzlehaving means to distribute the steam uniformly to each tube and toprovide a blower device for the tubes to create adraft when the engineis idle. Other objects will be apparent from the description taken inconnection with the drawings.

In the drawings,

Figure 1 is a longitudinal sectional view through the front end of alocomotive boiler showing the general arrangement of the heater and thenozzle therefor;

Fig. 2 is a transverse sectional view showing thestack, heater andnozzle in half elevation and half section;

Fig. 3 is a sectional view taken substantially on the line 3-3 of Fig.2;

Fig. 4 is a bottom plan view of the steam inlet for the nozzle;

Fig. 5 is a partial sectional view taken through the upper end of thestack and showing the water inlet and a pair of tubes in section;

Fig. 6 is a half plan view of the nozzle;

Fig. 7 is a plan view showing the arrangement of the-blower piping.

As is clearly shown by inspection of the drawings, the structureconsists of a tubular feed water heater or economizer located in thespace usually allotted to the stack and extending into the smoke box ofthe boiler. A nozzle is arranged below the bottom of the heater anddesigned to receive steam and deliver it through a plurality ofdischarge openings to the bottom ends of the tubes of the heater. Apartition is provided so that the gases must pass to the front of thesmoke Specification of Letters Patent.

Patented June 8, 1920.

Serial No. 130,878.

box and thence through the usual netting to circulate around the tubesof the heater and be blown upward through the tubes by the steamdischarged from the nozzle.

The stack shell 10 is flanged at the upper end thereof and has rivetedthereto a tube sheet 11, a spacing ring 12 and another tube sheet 13thus forming a space between the two tube sheets. In the smoke box twosimilar tube sheets 141 and 15 separated by a spacing ring 16 arelocated. Tubes 17 are expanded at their ends into the two outer tubesheets 13 and 14 and surrounding these tubes are tubes 18 of largerdiameter which are expanded into the inner heads 11 and 15. Thus annularspaces are formed around each of the tubes 17 and these spaces areconnected to the top and bottom spaces formed between the tube sheets.The space between the upper tube sheets is provided with an inlet 19 andthe space between the lower tube sheets is furnished with an outlet 20oppositely located with respect to the said inlet. The said upper spaceis divided by a partition 21 so that the water entering through theinlet 19 is obliged to pass downpartition 22 located so that the watercannot pass upward through the two right-hand rows of tubes as viewed inFig. 2. It will thus be apparent that circulation of water fed to theinlet by the pump injector or any other means is downward through thetwo left-hand rows of tubes, upward through the two central rows oftubes and downward to the outlet through the two right-hand rows oftubes. Of course these partitions and the circulation of water may bevaried to suit the number of tubes and the arrangement thereof.

A nozzle A for delivering steam to the lower ends of the tubes islocated just below the lower tube sheets. As will be apparent from thedrawings this nozzle is substantially cone shaped and is hollow. Thepart corresponding to the apex is formed with a steam inlet opening 23and the base thereof is formed with a plurality of discharge openings24. These openings extend upward through projecting smaller nozzles 25,and one of these smaller nozzles is furnished for each of the tubes andis located substantially centrally with respect to the same.

The nozzle is provided with one or more conical walls 26, 27 which formpassages leading from the inlet to the discharge openings. The wall26 isformed with an inlet 28 and the wall 27 with an inlet 29. From Fig. 4which is a bottom plan view of the inlet to the nozzle it will beobserved that the inlets 28 and 29 are so positioned that each willreceive some of the entering steam. Furthermore the areas of theseinlets is such that each one will take the proper amount of steam tofurnish equal quantities thereof to each of the discharge openings. Thussome of the steam entering through inlet 23 passes through the opening28, the remainder being deflected by the edges of the opening andpassing into the conical space between the wall 26 and the outer wall ofthe nozzle. The steam which is caught in this outer space is justsufficient to supply the discharge openings 24 which are connected withthe said space. Of the steam which enters through the opening 28 somepasses through the opening 29 and the remainder is caught by the edgesof the opening and delivered into the passage between the conical walls26 and 27. It will be obvious that it is merely a question of design toso proportion these openings that each one will take steam in ratio tothe number of discharge openings that it supplies. Consequently thenozzle is furnished with means for delivering equal quantities of steamto each of the discharge openings. This results in creating a uniformdraft through all of the tubes of the heater and consequently inobtaining a uniform heating from each of the tubes.

Just below the lower tube sheet a header 30 is supported and is providedwith a plu rality of branches 31 each having a plurality of upwardlyextending discharge tubes 32, each of the latter being located adjacentthe edge of a tube 17. This arrangement constitutes a blower, which isused to create a draft when the locomotive is not running, at which timethe blower is made to take live steam direct from the boiler.

It will be noted that the space in the smoke box is divided into twocompartments by plates 33, 34 and 35, the latter being attached to thebottom of the spark arrester netting 36. Thus it will be apparent thatthe gases will pass around the nozzle through the netting and willcirculate around the tubes of the heater and finally be blown up throughthe tubes of the same by the steam blast. As these gases are at a hightemperature they will in their circulation around the tubes of theheater and through the same give up considerable heat which will beabsorbed by the water in the heater. Furthermore the heater'willabstract some of the heat from the steam used to create the draft.

It will be obvious that this heater is adapted for use in locomotiveboilers of dilierent types, that is, it can be used in boilers with orwithout superheaters and in stationary locomotive boilers or locomotiveengine boilers. Although a specific embodiment of the invention has beendescribed it is apparent that many of the details may be varied withoutdeparting from the spirit of the invention.

Having thus described the invention what is claimed and desired to besecured by vLetters Patent is:

1. In combination with a feed water heater for locomotive boilers, asteam nozzle having a plurality of discharge openings and formed withinternal passages, the cross sectional area of the passages beingproportional to the area of the openings leading from each passage.

2. In combination with a locomotive boiler having the usual smoke boxand stack shell, spaced apart tube sheets arranged at the top of saidshell, similar spaced apart tube sheets arranged below said shell and inthe smoke box, a series of inner tubes carried by the end tube sheets, aseries of outer tubes surrounding the first series and carried by theinner tube sheets whereby water spaces are formed between the tubes andthe tube sheets and the products of combustion are circulated around theouter tubes and up through the inner tubes, an inlet for the spacebetween said upper sheets and outlet for the space between said lowersheets, and means for discharging equal quantities of steam into thelower end of each of the inner tubes.

3. In combination with a locomotive boiler having the usual smoke boxand stack shell, spaced apart tube sheets arranged at the top of saidshell, similar spaced apart tube sheets arranged below said shell and inthe smoke box, a series of tubes carried by the end tube sheets, aseries of tubes surrounding the first series and carried by the innertube sheets whereby water spaces are formed between the tubes and tubesheets, an inlet for the space between said upper sheets and outlet forthe space between the lower sheets, and means for discharging exhauststeam into the lower ends of the inner tubes and a pipe at the lower endof each inner tube for delivering live steam.

4. In a locomotive boiler having a tubular feed water heater in thestack, a nozzle for delivering steam to the heater comprising asubstantially hollow cone having a plurality of discharge openings inits base and an inlet at the apex and one or more spaced conical wallsarranged in the cone and having inlets at their apices.

5. In a locomotive boiler having a tubular feed water heater in thestack, a nozzle for delivering steam to the heater comprising asubstantially hollow cone having a plurality of discharge openings inits base and an inlet at the apex and means for carrying equalquantities of steam to the openings.

6. In combination with a locomotive boiler having a smoke box and stackshell, a feed Water heater in said shell and extending into the smokebox, said heater including a series of inner tubes, a series of outertubes surrounding the inner tubes, walls around the portion of theheater in the smoke box, one wall being formed to admit the prod nets ofcombustion for circulation around the outer tubes and up through theinner tubes, and means for delivering substantially equal quantities ofsteam at the bottom of each inner tube.

7. I11 combination with a locomotive boiler having a smoke box and stackshell, walls within the smoke box inclosing a space at the bottom of thestack, the stack and said walls thus forming a chamber, a tubular feedwater heater arranged in said chamber, one of the walls being formed toadmit the products of combustion for circulation around the heater andup through the tubes and means for delivering equal quantities of steamto the lower end of each of the tubes of the heater.

8. I11 combination with a locomotive boiler having a smoke box and stackshell, walls within the smoke box inclosing a space at the bottom of thestack, the stack and said Walls thus forming a chamber, a tubular feedwater heater arranged in said chamber, one of the Walls being formed toadmit the products of combustion for circulation around the heater andup through the tubes and another wall having means for delivering equalquantities of steam to the lower end of each of the tubes of the heater.

9. In combination with a locomotive boiler having a smoke box and stackshell, a tubu- IVILLIAM F. KIESEL, J R.

